On Mon, 12 Sep 2005 14:59:35 -0700, Grant Erwin
wrote:
Gunner Asch wrote:
I had a brand new Marathon Elect 10hp 3450rpm motor kicking around so
I decided to breadboard it up into a bigger RPC and see if it would
run the Airco. Getting it up to speed was the problem, as I couldnt
spin it fast enough with a rope wrapped around the shaft, so micky
moused up a 1/2hp 110vt 3450 moter, pulley and flat belt to spin the
big motors shaft directly, before applying single phase power to it.
Which worked just fine.
God that big 10hp motor is loud when it runs....I could hear it 200
yrs away, Of course..bolting it to a pair of I beams, then sitting
loose on the top of my welding bench turned the bench into a sounding
board....aaaaack!!
I bet if you worked on it you could get that idler to run a lot quieter. Make
the feet *right* so nothing is twisted, nothing is loose, everything's just
solid and no teeny warps. Then rubber-mount the whole bidness. I bet that would
knock off at least 15 dB right there. A little enclosure would help a lot too.
GWE
Im planning on building this into a "unit", Electrical subpanel, etc.
Ive got a Clausing 1501 15x48 lathe I havent been able to do much
with, as it has a 7.5hp motor on it, which the 5hp will start..but it
doesnt like it very much, least of all starting it in high gear.
I simply stuck this together in the most expedious fashion, just to
see if it would run the welder well enough to bother going any
further. LOL...since I let out the magic smoke on the commercial
RPC..my shop has been running on a 5hp motor sitting in the dirt in
the middle of the shop with a dryer cord feeding it and a chunk of
12/4 running to the distro panal. Rope start and plug it in quick
before the motor slows down. But it worked for an expedient.
Gunner
"Pax Americana is a philosophy. Hardly an empire.
Making sure other people play nice and dont kill each other (and us)
off in job lots is hardly empire building, particularly when you give
them self determination under "play nice" rules.
Think of it as having your older brother knock the **** out of you
for torturing the cat." Gunner
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